Novia VC4000 FR Reflective Vapour Control Layer 1.5m x 50m Roll

Novia VC4000 FR Reflective Vapour Control Layer is a premium quality, high performance, Class B flame resistant, reflective air and vapour control layer (AVCL) in any insulated wall or roof application where high moisture vapour resistance is required. Novia VC4000 FR has a reflectivity of 98%, which will significantly improve both U and r values when correctly installed. Novia VC4000 FR will also provide a very low moisture vapour permeability solution. It is approved for use in high rise applications.

• Lightweight breather membrane,
• Very low moisture vapour permeability,
  
• Premium performance tensile and nail tear strength,
• EN 13501-1 fire approval,
  
• Approved for use in high rise applications,
  
• Air and wind tight,
• Improve U values,
• Minimises interstitial condensation.

APPLICATION

• Any insulated wall or roof application where high moisture vapour resistance is required.
  

INSTALLATION

To walls

• Ensure upper layers overlap lower layers.
• Work from the bottom moving upwards and ensuring there are minimum overlaps of 100 mm on the horizontal joints.
• Do not begin a vertical lap joint within 300 mm of a corner,
• Vertical laps should be at least 150 mm.
• Ensure the bottom timber is also protected by an overlap.
• Fix at suitable intervals with galvanised nails, stainless staples or similar permanent fixings.
  

To roofs

• Ensure upper layers overlap lower layers.
• Work from the bottom moving upwards and ensure there are minimum overlaps.
• The membrane should be overlapped 200 mm on each side of the ridge.
• All vertical overlaps must be situated on a rafter and must be sealed.
• Fix at suitable intervals with galvanised nails, stainless staples or similar permanent fixings.
• At any entry points for services (soil pipes, vents etc.), ensure that the membrane is properly sealed.
• Use of Novia breather membrane tapes.
• Ensure that for wall or warm roof applications, a vapour barrier is installed on the warm side of the insulation.
  

CERTIFICATION

• Complies to EN 13501-1 Fire Classification Class B-s1, d0
• Meets the requirements for UKCA marking,